GNU bug report logs - #44397
28.0.50; tab-bar-mode: tab-switcher creates a new tab every time

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Zhiwei Chen <condy0919 <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 28.0.50; tab-bar-mode: tab-switcher creates a new tab every time
Date: Tue, 03 Nov 2020 02:03:25 +0800

,----[ C-h f tab-switcher RET ]
| tab-switcher is an interactive compiled Lisp function in ‘tab-bar.el’.
| 
| It is bound to SPC t i, <normal-state> SPC t i.
| 
| (tab-switcher)
| 
|   Probably introduced at or before Emacs version 27.1.
| 
| Display a list of named window configurations.
| The list is displayed in the buffer ‘*Tabs*’.
| It’s placed in the center of the frame to resemble a window list
| displayed by a window switcher in some window managers on Alt+Tab.
| 
| In this list of window configurations you can delete or select them.
| Type ? after invocation to get help on commands available.
| Type q to remove the list of window configurations from the display.
| 
| The first column shows ‘D’ for a window configuration you have
| marked for deletion.
`----

The docstring doesn't say it will create a new tab but a
`tab-bar-new-tab' call will be made eventually. It's like that `ibuffer'
will create a new (dummy) buffer (not the special *Ibuffer* buffer). Any
reasons on that?

-- 
Zhiwei Chen

Message #8 received at 44397 <at> debbugs.gnu.org (full text, mbox):

From: Juri Linkov <juri <at> linkov.net>
To: Zhiwei Chen <condy0919 <at> gmail.com>
Cc: 44397 <at> debbugs.gnu.org
Subject: Re: bug#44397: 28.0.50; tab-bar-mode: tab-switcher creates a new
 tab every time
Date: Mon, 02 Nov 2020 23:30:38 +0200

> ,----[ C-h f tab-switcher RET ]
> The docstring doesn't say it will create a new tab but a
> `tab-bar-new-tab' call will be made eventually. It's like that `ibuffer'
> will create a new (dummy) buffer (not the special *Ibuffer* buffer). Any
> reasons on that?

`ibuffer' is a good analogy: it creates the special *Ibuffer* buffer,
and the same way `tab-switcher' creates the special *Tabs* tab.

I agree that the docstring should say that it creates a new tab,
even though `ibuffer' doesn't say that it creates a new buffer.

Message #11 received at 44397 <at> debbugs.gnu.org (full text, mbox):

From: Condy Chen <condy0919 <at> gmail.com>
To: Juri Linkov <juri <at> linkov.net>
Cc: 44397 <at> debbugs.gnu.org
Subject: Re: bug#44397: 28.0.50; tab-bar-mode: tab-switcher creates a new
 tab every time
Date: Tue, 03 Nov 2020 17:37:55 +0800

> `ibuffer' is a good analogy: it creates the special *Ibuffer* buffer,
> and the same way `tab-switcher' creates the special *Tabs* tab.


The problem is `tab-switcher' never reuses the *Tabs* tab and always create a new one. After N `tab-switcher' calls, there are N additional tabs created if user has not deleted anyone.  

> I agree that the docstring should say that it creates a new tab,
> even though `ibuffer' doesn't say that it creates a new buffer.



Looks like the behavisor is expected?

Message #14 received at 44397 <at> debbugs.gnu.org (full text, mbox):

From: Juri Linkov <juri <at> linkov.net>
To: Condy Chen <condy0919 <at> gmail.com>
Cc: 44397 <at> debbugs.gnu.org
Subject: Re: bug#44397: 28.0.50; tab-bar-mode: tab-switcher creates a new
 tab every time
Date: Tue, 03 Nov 2020 21:23:44 +0200

merge 44397 38624
thanks

>> `ibuffer' is a good analogy: it creates the special *Ibuffer* buffer,
>> and the same way `tab-switcher' creates the special *Tabs* tab.
>
> The problem is `tab-switcher' never reuses the *Tabs* tab and always
> create a new one.  After N `tab-switcher' calls, there are
> N additional tabs created if user has not deleted anyone.
>
>> I agree that the docstring should say that it creates a new tab,
>> even though `ibuffer' doesn't say that it creates a new buffer.
>
> Looks like the behavisor is expected?

It seems what you need is not tab-switcher, but the exact analog of
`ibuffer' to manage tabs the same way as `ibuffer' manages buffers.

Please see https://debbugs.gnu.org/38680 and https://debbugs.gnu.org/38624
where such `tab-list' is being developed.

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